1) The collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets. a) solar system b) orbit c) planets 2) A person who is trained to travel in a spacecraft. a) planet b) astronaut c) scientist 3) The planet on which we live; the world. a) land b) planet c) Earth 4) The curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution. a) orbit b) planet c) Earth 5) A cylindrical projectile that can be propelled to a great height or distance by the combustion of its contents, used typically as a firework or signal. a) planet b) rocket c) spacecraft 6) Come down through the air and alight on the ground. a) land b) Earth c) orbit 7) The physical universe beyond the earth's atmosphere. a) rocket b) space c) solar system 8) A vehicle used for traveling in space. a) planet b) Earth c) spacecraft 9) (of an aircraft or bird) become airborne. Ex. "The plane took off from the runway" a) take off b) orbit c) land 10) A celestial body moving in an elliptical orbit around a star. a) Earth b) planet c) orbit

Vocabulary Quiz UNIT 7

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